Chaeley bovefslep



(No ModeL) C. BOVENSIBP.

GALIPBRS;

Patented Apr. Z2, 1884.

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CALIPERS.

SPECIFICATION forming part of Letters Patent No. 297,492, dated April 22, 1884.

Applicationfil'ed February 23, 1884. (No model.) Y

T0 all whom t 77cm/ concern,.-

Be it known that I, @HARLEY BovENsIEP,

of Detroit, in the county of Wayne and Stateof Michigan, have invented new and useful Improvements in Calipers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in the construction of calipers, by means of which each leg thereof has its independent point of pivot, in contradistinction to those which have a pivotal point common to both of thelegs and adapted to be reversed, so that the same implement can be used at will, as inside or outside calipers, and provided with a locking device, which, while it does not interfere with the perfect working of the implement, will perfectly lock the legs in any position in which they may be placed for use.

The invention consists in the peculiar constructionl of the parts and their combination,- as more fully hereinafter described.

Figure lis a plan View, partially in section, showing my improved implement. Fig. 2 is a side elevation of the same. Fig. 3 is a sectional elevation of the head or upper end. Fig. 4 is a vertical central section on the line X X in Fig. l. Fig. 5 is a sectional elevation of the head when the implement is employed as an inside calipers.

In the accompanying drawings, ywhich form a part of this specification, A A represent the two legs of a pair of calipers, the upper end of each leg terminating in an enlarged toothed segment, a, and these heads are pivotally secured between the plates b b in such manner,

as shown, that the teeth of each engagewith each, as shown. B is a lever-nut engaging with the threaded end of the bolt C, which passes through said plates, and adapted,when tightened upon the bolt, to lock the legs in any desired position. This bolt is prevented from turning, under the actuation of, the lever-nut, by a feather, c, upon the shaft of the bolt,which enters a corresponding slot in the plate adjacent to the head of such bolt.

So far the implement has been described as an outside calipers.

To enable the device to be used as an inside calipers the outer edges of thev legs are recessed, as at d, for the purpose of allowing such recesses, when the position of the legs is reversed to perform inside work, to embrace the bolt, as shown in Fig. 5, the levernut being employed to lock them, as in the first instance.

A like construction may be applied to the legs of Compasses Within the spirit of my invention.

W'hat l claim as my invention is- 1. A calipers consisting of the legs A, each terminating in a toothed segment, and each leg being independently pivoted between the plates b b, through which passes the bolt C, provided with a lever locking-nut, substantially as described.

2. In a calipers having a locking-bolt, the legs A, having recesses d, adapted to inclose or embrace the locking-bolt when the legs are reversed to form inside calipers, substantially as specified.

@HARLEY BOVEN SIEP.

Vitnesses:

H. S. SPRAGUE, I J. PAUL MAYER. 1 

